We use necessary cookies to keep DataHouse.pl working and optional cookies for analytics and marketing. You can accept all, reject optional cookies, or configure your choices.

OK, I AGREE I DISAGREE CHANGE THE CONSENTS

Thanks to cookies and similar technologies (hereinafter referred to as "cookies"), we can improve the functionality of our website and display content tailored to your needs and expectations.

For more information on the use of cookies, please see our [Cookie Policy].

I agree to:

Analytical use of cookies

Marketing use of cookies

Use of necessary cookies (always active)

Your preferences regarding cookies, expressed after logging in to the website, will be assigned to your Datahouse.pl account. This ensures that it is also saved if you sign in to your account from another device or browser.

CONFIRM SELECTION CANCEL

CVE-2026-31532: linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: can: raw: fix ro->uniq use-after-free in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver deletion is deferred with call_rcu(). This leaves a window where raw_rcv() may still be running in an RCU read-side critical section after raw_release() frees ro->uniq, leading to a use-after-free of the percpu uniq storage. Move free_percpu(ro->uniq) out of raw_release() and into a raw-specific socket destructor. can_rx_unregister() takes an extra reference to the socket and only drops it from the RCU callback, so freeing uniq from sk_destruct ensures the percpu area is not released until the relevant callbacks have drained. [mkl: applied manually]

CVE-2026-31532CVSS 7.8Linux

CVE-2026-31532: linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: can: raw: fix ro->uniq use-after-free in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver deletion is deferred with call_rcu(). This leaves a window where raw_rcv() may still be running in an RCU read-side critical section after raw_release() frees ro->uniq, leading to a use-after-free of the percpu uniq storage. Move free_percpu(ro->uniq) out of raw_release() and into a raw-specific socket destructor. can_rx_unregister() takes an extra reference to the socket and only drops it from the RCU callback, so freeing uniq from sk_destruct ensures the percpu area is not released until the relevant callbacks have drained. [mkl: applied manually]

CVSS: 7.8 HIGH
EPSS: 2.48%
Known exploited: not in KEV
Product: linux kernel

What is known

In the Linux kernel, the following vulnerability has been resolved: can: raw: fix ro->uniq use-after-free in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver deletion is deferred with call_rcu(). This leaves a window where raw_rcv() may still be running in an RCU read-side critical section after raw_release() frees ro->uniq, leading to a use-after-free of the percpu uniq storage. Move free_percpu(ro->uniq) out of raw_release() and into a raw-specific socket destructor. can_rx_unregister() takes an extra reference to the socket and only drops it from the RCU callback, so freeing uniq from sk_destruct ensures the percpu area is not released until the relevant callbacks have drained. [mkl: applied manually]

Sources

Back to security hub Contact DataHouse